5671634557 has 2 divisors, whose sum is σ = 5671634558. Its totient is φ = 5671634556.

The previous prime is 5671634519. The next prime is 5671634581. The reversal of 5671634557 is 7554361765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5622900196 + 48734361 = 74986^2 + 6981^2 .

It is a cyclic number.

It is not a de Polignac number, because 5671634557 - 2¹¹ = 5671632509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5671634557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5671634587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2835817278 + 2835817279.

It is an arithmetic number, because the mean of its divisors is an integer number (2835817279).

Almost surely, 2^5671634557 is an apocalyptic number.

It is an amenable number.

5671634557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5671634557 is an equidigital number, since it uses as much as digits as its factorization.

5671634557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646000, while the sum is 49.

The square root of 5671634557 is about 75310.2553242253. The cubic root of 5671634557 is about 1783.3479217331.

The spelling of 5671634557 in words is "five billion, six hundred seventy-one million, six hundred thirty-four thousand, five hundred fifty-seven".